LM98555 datasheet(6/15 Pages) TI

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tPHL

tPLH

INPUT

OUTPUT

VDDI/2

0.25 x VDDO

VDDI/2

0.75 x VDDO

tR = 0.8 ns

tF = 0.8 ns

90%

10%

LM98555

SNAS290D – DECEMBER 2005 – REVISED APRIL 2013

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DC Electrical Characteristics (continued)

The following specifications apply for GND = 0V, VDDI = 3.3V, VDDO = 5.0V, unless noted otherwise. Boldface limits apply

for TA= TMIN to TMAX; all other limits TA= 25°C

Parameter

Test Conditions

Min

Typical

Max

Units

ILOAD = 525 mA

Output Impedance P1A and P2A

RO = (VDDO - VO)/IOH or

6.1

9.9

Ω

Outputs

RO = VO/IOL

ILOAD = 280 mA

Output Impedance All Other

RO = (VDDO - VO)/IOH or

10.2

17.4

Ω

Outputs

RO = VO/IOL

AC Electrical Characteristics

The following specifications apply for GND = 0V, VDDI = 3.3V, VDDO = 5.0V, unless noted otherwise. Boldface limits apply

for TA= TMIN to TMAX; all other limits TA= 25°C

Parameter

Test Conditions

Min

Typical

Max

Units

tPHL

Prop Delay: High-to-Low

CL = 220 pF, RL = 10Ω

(1)

3.06

4.6

6.55

P1A and P2A Outputs

tPHL

Prop Delay: High-to-Low

CL = 82 pF, RL = 10Ω

(1) (2)

4.1

CP, RS, P2B Outputs

tPLH

Prop Delay: Low-to-High

CL = 220 pF, RL = 10Ω

(3)

3.38

4.9

6.68

P1A and P2A Outputs

tPLH

Prop Delay: Low-to-High

CL = 82 pF, RL = 10Ω

(3) (2)

4.2

CP, RS, P2B Outputs

tSKEW

Prop Delay Skew High-to-Low

Between any P1A or P2A Outputs

109

387

on a Single Unit

Prop Delay Skew Low-to-High

157

490

CL = 220 pF, RL = 10Ω

(1)

Propagation Delay High-to-Low with output low trigger voltage at VDDO*0.75.

(2)

Typical values determined from characterization testing only. Not production tested or ensured.

(3)

Propagation Delay Low-to-High with output high trigger voltage at VDDO*0.25.

Test Conditions

Figure 3. AC Test Conditions

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